Mercurial > dropbear

annotate libtomcrypt/src/pk/katja/katja_export.c @ 447:278805938dcf

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Patch from Nicolai Ehemann to try binding before going to the background, so that if it exits early (because something's already listening etc) then it will return an exitcode of 1.
author Matt Johnston <matt@ucc.asn.au>
date Thu, 19 Jul 2007 15:54:18 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
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382
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 *
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9 * Tom St Denis, [email protected], http://libtomcrypt.com
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file katja_export.c
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15 Export Katja PKCS-style keys, Tom St Denis
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16 */
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17
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18 #ifdef MKAT
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19
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20 /**
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21 This will export either an KatjaPublicKey or KatjaPrivateKey
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22 @param out [out] Destination of the packet
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23 @param outlen [in/out] The max size and resulting size of the packet
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24 @param type The type of exported key (PK_PRIVATE or PK_PUBLIC)
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25 @param key The Katja key to export
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26 @return CRYPT_OK if successful
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27 */
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28 int katja_export(unsigned char *out, unsigned long *outlen, int type, katja_key *key)
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29 {
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30 int err;
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31 unsigned long zero=0;
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32
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33 LTC_ARGCHK(out != NULL);
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34 LTC_ARGCHK(outlen != NULL);
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35 LTC_ARGCHK(key != NULL);
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36
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37 /* type valid? */
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38 if (!(key->type == PK_PRIVATE) && (type == PK_PRIVATE)) {
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39 return CRYPT_PK_INVALID_TYPE;
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40 }
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41
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42 if (type == PK_PRIVATE) {
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43 /* private key */
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44 /* output is
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45 Version, n, d, p, q, d mod (p-1), d mod (q - 1), 1/q mod p, pq
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46 */
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47 if ((err = der_encode_sequence_multi(out, outlen,
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48 LTC_ASN1_SHORT_INTEGER, 1UL, &zero,
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49 LTC_ASN1_INTEGER, 1UL, key->N,
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50 LTC_ASN1_INTEGER, 1UL, key->d,
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51 LTC_ASN1_INTEGER, 1UL, key->p,
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52 LTC_ASN1_INTEGER, 1UL, key->q,
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53 LTC_ASN1_INTEGER, 1UL, key->dP,
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54 LTC_ASN1_INTEGER, 1UL, key->dQ,
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55 LTC_ASN1_INTEGER, 1UL, key->qP,
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56 LTC_ASN1_INTEGER, 1UL, key->pq,
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57 LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
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58 return err;
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59 }
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60
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61 /* clear zero and return */
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62 return CRYPT_OK;
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63 } else {
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64 /* public key */
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65 return der_encode_sequence_multi(out, outlen,
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66 LTC_ASN1_INTEGER, 1UL, key->N,
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67 LTC_ASN1_EOL, 0UL, NULL);
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68 }
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69 }
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70
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71 #endif /* MRSA */
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72
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73 /* $Source: /cvs/libtom/libtomcrypt/src/pk/katja/katja_export.c,v $ */
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74 /* $Revision: 1.2 $ */
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75 /* $Date: 2006/03/31 14:15:35 $ */